package com.wzy.netty.core.websocket;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;

import java.time.LocalDateTime;

/**
 * 描述
 * 创建人    Wzy
 * 创建时间: 2020-05-22  14:12
 */
/*
 * TextWebSocketFrame 表示一个文本帧 frame
 * */
public class MyTextWebSocketFrameHandler extends SimpleChannelInboundHandler<TextWebSocketFrame> {
    @Override
    public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
        /*id 表示唯一的值,longText是惟一的  asShortText不唯1*/
        System.out.println("handlerAdded被调用" + ctx.channel().id().asLongText());
        System.out.println("handlerAdded被调用" + ctx.channel().id().asShortText());
    }

    @Override
    public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
        System.out.println("handlerRemoved被调动" + ctx.channel().id().asLongText());
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        System.out.println("异常发生" + cause.getMessage());
        ctx.close();
    }

    @Override
    protected void channelRead0(ChannelHandlerContext ctx, TextWebSocketFrame msg) throws Exception {
        System.out.println("服务器端收到消息" + msg.text());

        //恢复浏览器
        ctx.channel().writeAndFlush(new TextWebSocketFrame("服务器时间" + LocalDateTime.now() + msg.text()));


    }
}
